Fan or blower



June 10 1924.

G. w. ALLEN FAN on BLOWER Filed May 28. 1919 2 Sheets-Sheet 1 mehezar m,1924. 1,497,468 G. W. ALLEN 7 FAN OR BLOWER Filed ma 28, 199 2Sheets-Skieet 2' v to the casing.

Patented June 10, 1924.

UNE'E'ED STATES earner OFFICE.

GEORGE W. ALLEN, OF HYDE PARK, MASSACHUSETTS, ASSIGNOR TO B. F. STURTE-VANT COMPANY, OF HYDE PARK, MASSACHUSETTS. A CORPORATION OF MASSA-CHUSETTS.

FAN 01% Application filed May 28,

To all whom it may concem:

Be it known that I, GEORGE WV. ALLEN, a citizen of the United States,residing at Hyde Park, Boston, in the county of Suffolk and State ofMassachusetts, have invented certain new and useful Improvements in Fansor Blowers; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

The present invention relates tofans or blowers and more particularly toapparatus of this character adapted for exhausting air, gas or the like.

It is well known to those skilled in the art that fans of this typecomprise generally a casing of suitable form with a fan rotatablymounted therein, the casing being generally provided with one or morelateral intake openings and a peripheral discharge opening. It isfrequently necessary and desirable to vary the angle of the peripheraldischarge opening either for convenience in making connection with anexisting installation or for other purposes, and accordingly one objectof the invention contemlates the provision of a casing which isadjustable relative to its supporting members in order to vary theposition of the peripheral discharge opening as desired.

With this object in view one feature of the invention consists in thecombination of a fan casing having a series of suitably disposed holeslocated in opposite walls, together with two co-operating supports be-'tween which the casing is secured by bolts or other securing meanspassed through openings formed in the supports and aligned with openingsin the casing.

It is highly desirable in apparatus of this sort that the fan shaft andfan supported thereon shall be mounted independently of the casing sothat the vibrations of the fan and shaft shall not be transmitteddirectly With this end in View an other object of the inventioncontemplates the provision of oppositely disposed pedestals or supportsprovided with shaft bearings for the endsof the fan'shaft and withsuitably located openings adapted to align with openings formed inopposite sides of the fan casing to receive bolts or other mem- BLOWER.

tion, combinations and arrangements of parts hereinafter described andclaimed, the advantages of which will be obvious to those skilled in theart from the following description.

In the accompanying'drawings illustrating the invention, Figure 1 is aview in front elevation of a preferred form of my invention; Fig. 2 is aview in side elevation of the same; Fig. 3 is a view in front elevationof a modification; Fig. 4 is a view in side elevation of the same with aportion broken away; and Fig. 5 is a sectional view of a preferred formof lubricating mechanism.

According to the preferred embodiment of the invention, the fan casingis provided with a number of lateral, circularly arranged securingmeans,which may be a number of openings adapted to receive bolts orother securing means, whereby the casing may be adjustably secured tothe supports.

In order that therotative adjustment of the fan casing shall not disturbthe proper relation between the moving fan and the casing the securingmeans are accurately located in concentric relation with respect to theaxis I of rotation of the fan shaft which in the ly arranged openings 16are provided in the sides of the casing 4, preferably concentric with,and along the same radius lines as the openings 14. The shaft 2 projectsbeyond the inlet openings 6 and 8, and is 'journaled within bearings 18and 20 carried by pedestal supports 22 and 24. The supports 22 and 24are provided with a pair of openings 26 and a second pair of openings28, the former of whichare adapted to register with any two adjacentopenings 14, and the latter of which with any two ad jacent openings 16.The casing 4 may be secured in rot-atably adjusted position with respectto the supports 22 and 24 by means of bolts, screws or similar securingmeans 29 cooperating with the openings 28 and 16 and 26 and 14,respectively. In this manner, the casing 4 may be mounted with theperipheral opening 10 in any one of a number of difi'erentangularpositions relative to the supports 22' and 24.

It will be observed from an inspection of Figure 2 that the openings 26and 28 formed in each one of the pedestal supports are disposed uponradial lines" corresponding to the lines uponwhich the'respectiveopenings 14 and16 are located so that as the casing is adjustedrotatively the bolt receivingjioles 26 and 28 will register withsuccessive sets of bolt receiving holes 14 and 16. In addition to therotative adjustment of the casing which may be secured with thisconstruction, it has the further advantage that the position of thecasing may be reversed between the pedestals so that the blower willoperate with either a right hand or a left hand discharge. This reversalof the casing is permitted by the fact that the opposite sides arefurnished with bolt holes located in identically the same manner andadapted to co-operate with either one of the two supporting pedestals.

- In Figures 3 and 4 is illustrated a fan casing constructed inaccordance with the principles of this invention, but modified toprovide for a closed intake. This type of construction may be employedfor pumping gas from a retort. The walls of the intake are provided withstuffing boxes through which the fan shaft projects. The stuffing boxesdo not support the shaft, which is journaled in the bearings 18 and 20,as in the form of the invention illustrated in Figs. 1 and 2. In orderto permit the use of the same supports 22 and 24 with this constructionadditional supporting members are provided between the casing and theordinary standard supports and pedestals.

The intake duct'connecting the inlet-openings, 6 and 8 is indicated at30 and is provided with a main inlet opening 82, which may, be.connected to the usual conduit." The walls of -t l 1e-*duct 30 areprovided with s' -ufiing boxes 3 5' through.- Which the: shaft 2projects. One of the stutfing boxes is shown in detail in Figure 5. Itcomprises a body portion 36 adapted for attachment to the intakehousing, a ring 38 secured therein and having a packing-receivingopening 40, packing 42 therein, a grease cup 44, and a gland 46 forsecuring the packing 42 in place in the packing-receiving opening 40. Itwill be noted from an inspection of Figure 5 that the packing comprisesa series of flexible packing discs 47 disposed upon opposite sides of aperipherally grooved disc 48 which is located at the bottom of thegrease duct 49 and is adapted to receive and distribute lubricant aboutthe rotating shaft 2. The packing rings 47in this construction serve toprevent the escape of gas or air from the interior of the intake ductoutwardly along the shaft. By means of this arrangement, the gas withinthe chamber 30 cannot escape along the shaft 2 to the outside air,and'the grease cannot escape along the shaft 2, either into outside airor into the chamber 30.

The supports 22 and 24, it of standard size, such as are suitable foruse in connec tion with the structure of Figs. 1: and'2, must be mountedso far away from the casing 4 that it is not practicable to secure-thecasing 4 thereto in the same manner as that described in connection withthe description oi: Figs. 1 and 2. In order that the standard supports22 and 24 may be employed, additional supports 52 and 54 are interposedbetween the supports 22 and 24 and the casing 4, each of which supports52 and 54-. is provided with openings similar to the openings 26 and 28shown in Figs. 1 and 2, by means of which the casing 4 may be secured tothe supports 52 and 54. Openings corresponding to the openings 26 and 28extend throughout the width of the supports, whereby the support 54 maybe secured to the support 24, and the support 52 to the support 22 bythe same bolts 29 which secure the casing 4 to the supports 52; and 54.

In this manner the casing 4 maybe secured to the supports 52 and 54independently of the fan. the shaft 20f which, though passing throughthe stuffing boxes 34 in the walls of the chamber 30, is neverthelesssur ported in the bearings 18 and 26 upon the supports 22 and 24. By meansof this arrangement, all the advantages accruing to the structureillustrated in Figs. 1 and 2. may be obtained. with the additionaladvantage that the inlet openings 6 and 8 are not exposed to the outsideair.

The nature and scope of the present invention having been indicated andtheseveral machines embodying the several feawhat is claimed is 1. A fancomprising a :tan casing having the.

axial intake openings and provided on each face with a concentric seriesof bolt holes located without the periphery of said openings, a pair ofpedestals having bolt holes below the intake openings and arranged toalign with a portion of the bolt holes of the casing for supporting thecasing wholly be low the axial intake openings in different angularpositions of the casing and without interference with the intakeopenings.

2. A fan having, in combination, a shaft, a casing provided with aperipheral discharge opening and lateral inlet openings through whichthe shaft projects, an intake duct leading to the inlet openings from amain inlet opening and having wall portions through which the shaftprojects, a pair of supports below said wall portions to which thecasing is secured and a pair of supports adjacent to the first-namedpair of supports having bearings for the shaft.

3. A fan having, in combination, shaft, a casing provided with aperipheral discharge opening and lateral inlet openings through whichthe shaft projects, a pair of bearings for the shaft, an intake ductleading to the inlet openings and having a main inlet opening, a pair offluid-tight stufling boxes mounted in the walls of the duct throughwhich the shaft projects, a pair of supports below the stufiing boxes towhich the casing may be rotatably adjustably secured, a pair of supportsfor the bearings, and means for rotatably adjustably securing the casingto the supports.

at. A fan comprising a rotor, a shaft, a fan casing having an axialintake opening and a tangential discharge opening, a ped estal adjacentthe intakesopening having at its top a bearing for the rotor shaft andinterinediate its top and bottom a support for the fan casing locatedbelow the axial intake opening and without interfering therewith, andconnections between the casing and the support comprising bolts adaptedto register with different bolt holes to vary the angular position ofthe casing and its discharge opening.

GEORGE W. ALLEN.

